Home / 427,000.60-639,809.70-268,946.20

Finding the Fourth Proportional to 427,000.60, 639,809.70 and 268,946.20

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Solution

The fourth proportional to 427,000.60, 639,809.70 and 268,946.20 is: 402,983.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,000.60 : 639,809.70 = 268,946.20 : x
  2. Step 2: Convert to fraction form
    427,000.60/639,809.70 = 268,946.20/x
  3. Step 3: Cross multiply
    427,000.60x = 639,809.70 × 268,946.20
  4. Step 4: Simplify right side
    427,000.60x = 172,074,387,538.14
  5. Step 5: Solve for x
    x = 172,074,387,538.14/427,000.60
  6. Step 6: Final answer
    x = 402,983.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.